This backstrap sleeve is compatible with your springfield xd-s with 3.30"-4" barrel.
Caliber: 45 ACP
Capacity: XD-S
Model: Backstrap Sleeve
Material: Polymer
Model Fit: XD-S
Brand Fit: Springfield Armory
Caliber: 45 ACP
Capacity: XD-S
Model: Backstrap Sleeve
Material: Polymer
Model Fit: XD-S
Brand Fit: Springfield Armory